Data

As part of the Clean Water Act, Section 319 authorizes funding that is distributed to Mississippi Department of Environmental Protection Agency to address nonpoint sources of pollution in the state of Mississippi. For this project, Weighted Regressions on Time, Discharge, and Season (WRTDS) models (Hirsch and others, 2010) were used to perform a trend analysis on nitrogen and phosphorus

Streamflow patterns are influenced by natural processes, anthropogenic activities, and climatic variability (Haddeland and others, 2014). Human activities, such as land-use changes, urbanization, deforestation, agricultural practices, and water resource development projects, can significantly impact hydrologic processes and streamflow (Foley and others, 2005). The data release presented...

This data release consists of 2 files: 1. MAP_DO.csv contains continuous sensor readings for dissolved oxygen, temperature, conductivity, and pH from 58 stream monitoring locations in the Mississippi Alluvial Plain (MAP) ecoregion in Mississippi, USA. Readings were recorded at 30 minute intervals for a single 24-hour period per monitoring location. The data was collected between 2007 and...

This model archive contains the model files for the Mobile Bay groundwater-flow model documented in the U.S. Geological Survey Scientific Investigations Report 2026–5125. The Mobile Bay model simulates transient groundwater flow in Mobile Bay and surrounding coastal areas of Alabama and Mississippi from 2008 through 2015. The primary goal of the model was to determine how changes in...

This data release contains the geodatabases and raster datasets used to construct the 2017 potentiometric‑surface maps and depth-to-water surfaces for the Nacatoch and Tokio aquifers. The datasets include: (1) groundwater‑level measurements and groundwater-altitude (GWA) from wells measured in 2017; (2) surface-water-altitude (SWA) from streamgages, if available, located within outcrop...

This data release contains results from 2019-2023 for bed material and suspended sediment samples collected at USGS 07374525 Mississippi River at Belle Chasse gage in association with the Louisiana Coastal Protection and Restoration Authority, Lowermost Mississippi River Management Program. Concentration, percent fines and grain size analysis on bed material and suspended sediment...

This data release contains water level observations from a sensor grid deployed in the tidal marshes of the Charles H. Wheeler Wildlife Management Area in the central Long Island Sound (Connecticut, USA). Water level sensors were deployed between August 2018 and December 2018 to serve as a calibration/validation (cal/val) dataset for the development, refinement, and evaluation of remote...

The U.S. Geological Survey is developing national water-use models to support water resources management in the United States. Model benefits include a nationally consistent estimation approach, greater temporal and spatial resolution of estimates, efficient and automated updates of results, and capabilities to forecast water use into the future and assess model uncertainty. In this data...

Since 1975, annual water use for Louisiana has been published on a 5-year basis and is used for a variety of purposes. As the Sparta aquifer is a heavily used aquifer, is the sole source of groundwater for many parishes in Louisiana, and recent withdrawals have exceeded the Sparta’s natural recharge, a more frequent compilation of water usage for the Sparta aquifer in Louisiana is needed...

Since 1975, annual water use for Louisiana has been published on a 5-year basis and is used for a variety of purposes. As the Sparta aquifer is a heavily used aquifer, is the sole source of groundwater for many parishes in Louisiana, and recent withdrawals have exceeded the Sparta’s natural recharge, a more frequent compilation of water usage for the Sparta aquifer in Louisiana is needed...

Since 1975, annual water use for Louisiana has been published on a 5-year basis and is used for a variety of purposes. As the Sparta aquifer is a heavily used aquifer, is the sole source of groundwater for many parishes in Louisiana, and recent withdrawals have exceeded the Sparta’s natural recharge, a more frequent compilation of water usage for the Sparta aquifer in Louisiana is needed...

The Memphis aquifer is the primary source of groundwater for municipal, industrial, and commercial uses in the Memphis area. The Memphis area includes all of Shelby County and parts of Tipton and Fayette Counties in Tennessee, parts of DeSoto and Marshall Counties in Mississippi, and part of Crittenden County in Arkansas (Kingsbury, 2018). Long-term withdrawals form the aquifer since...